1988 PONTIAC FIERO window

POWER WINDOWS
--- ------ *DO 1 FUSE LOCK CmT I- ! I {- BREAKER !
WOO 35AMP I L,-2 ,----- -I
3 PNK 76 1

POWER WINDOWS
TROUBLESHOOTING HINTS
s Try the following checks before doing the Sys-
tem Check.
1. If no windows operate, check the WDO Cir-
cuit Breaker by visual inspection.
2. If no windows operate, check that ground
6309 is clean and tight.
e Go to System Check for a guide to normal
operation.
e Go to System Diagnosis for diagnostic tests.
COMPONENT LOCNIOM Page-Figure
..................... ...... Fuse Block. Behind LH side
of IIP, below light switch. 201-10-A
................. ............. VVindow Motors In lower front corner of each door 201-18-A
................ ........ C238 (12 cavities) LH shroud, ahead of center access hole. 201-11-C
.......................... 6309 Below rear of console
.......................... S301. Crosscar harness, below LR front seat
SYSTEM DIAGNOSIS A: LH FRONT POWER WINDOW
e Do the tests listed for your symptom in the SWITCH TEST
Symptom Table below.
e Tests follow the Symptom Table.
SYSTEM CHECK SYMPTOM TABLE
* Use the System Check Table as a guide to
normal operation.
Refer to System Diagnosis for a list of symp-
toms and diagnostic steps.
SYSTEM CHECK TABLE
and DN from the
moothly, with no
EH Front Power
Window Switch
RH Front Window
RH Front Power
r Refer to System Diagnosis when a result
is not normal.
to splice S301 for an
open. If wire is OK,
perform tests A and
RH Front Power
Window does not Window Switch
CONNECTOR (Connected)
(A: LN FRONT POWER WINDOW
SWITCH TEST continued on next page)

POWER WlNDOWS
(A: LH FRONT POWER WINDOW
SWITCH TEST continued from previous
.page) 6: WINDOW MOTOR TEST
. Check BLK (150) wire for an open (see
B: RH FRONT POWER WINDOW
SWITCH TEST
At: RM FRONT POWER WINDOW SWITCH
CONNECTOR (Connected)
I 0 lanition Switch: RUN I
s Ignition Switch: RUN
Operate associated Power Window
D (PNK) Test Lamp
& B (BLK) Lights See 2
0 Operate
RH Front Power Window
Switch UP and DN
C (LT BLU) ( Test Lamp ( See & A (TAN) lights
0 If all the results are correct, go to Test C.
1. Check PNK (76) wire for an open (see sche-
matic).
2. Check BLK (150) wires for an open (see
schematic).
3. Replace RN Front Power Window
Switch. With
the Ignition Switch in RUN, voltage is
applied through the
WDO Circuit Breaker and
the PNK and
PNKIWNT wires to the Power
Window Switches. With the LH Front Power
Window Switch in UP, voltage is applied
through the WDO Circuit Breaker, the
LN
Front Power Window Switch, and the DK BLU
wire to the LH Front Window Motor. The
Motor is grounded through the BRN wire and
the DN contacts of the LN Front Window
Switch to 6309. The motor runs and the
window goes up. Voltage is
similarly applied
with the RN Front Power Window Switch in
UP.
In DN, voltage is applied to each motor in the
opposite direction and the window goes down.

THEFT DETERRENT SYSTEM: PASSKEY I a
TROUBLESHOOTING HINTS COMPONENT LOCATION
Try the following checks before doing the Sys-
tem Check.
1. Check the key pellet sensing contacts in the
Ignition Lock Cylinder by looking into the
key opening. If the contacts are damaged,
replace the Lock Cylinder.
2. Check the VATS Fuse by visual inspection.
3. Check owner's ignition key using the 535628
VATS Interrogator or equivalent.
If the Key
Code window shows "E", replace the
owner's key.
4. Check the Security Indicator Bulb.
5. Check the
CIH Fuse by visual inspection.
Go to System Check for a guide to normal
operation.
Go to System Diagnosis for diagnostic tests.
SYSTEM CHECK
Use the System Check Table as a guide to
normal operation.
r Refer to System Diagnosis for a list of symp-
toms and diagnostic steps.
Clutch Start Switch .............. Above clutch pedal, on clutch pedal support
Convenience Center
.............. Behind IIP, to right of steering column. ........
Electronic Control Module (ECM) ... Behind RN side of IIP ......................
Fuse Block. ..................... Behind LH side of IIP, below light switch. ......
Gear Selector Switch ............. In console, at base of gear selector ............
Ignition Switch. ................. Behind IIP, on top side of steering column ......
Starter Enable Relay ............. Behind LH side of IIP, left of steering column
Starter Solenoid (VIN E)
.......... Lower RH side of engine ....................
Starter Solenoid (VIN F) (VIN 8). ... Lower RH side of engine ....................
Starter Solenoid (VIN S) .......... Lower RN side of engine ....................
VATS Decoder Module. ........... Behind LH side of IIP, above steering column
Cl00 (42 cavities) ................ LH front of dash, left of brake master cylinder ..
C207 (15 cavities) ................ Behind RN side of IIP, near ECM .............
6228. .......................... Behind IIP, on upper RH side of steering column
6118 (VIN
E) ................... Rear of RN cylinder head. ...................
6118 (VIN F) (VIN 8) ............. Rear of RH cylinder head. ...................
6118 (VIN S) .................... Rear of RN cylinder head. ...................
S143 (VIN E) .................... Engine harness, RR front of dash. ............
S143 (VIN F) (VIN 8) ............. Engine harness, RN front of dash. ............
S143 (VIN S) .................... Engine harness, center front of dash. ..........
S217. .......................... IIP harness, behind center of IIP. .............
S224. .......................... IIP harness, near LH shroud
S234. .......................... I/P harness, above Fuse Block. ...............
S242. .......................... IIP harness, behind RH side of IIP ............
SYSTEM CHECK TABLE
(Continued on next page)
Put
the Ignition
Switch in RUN
R aJ XI
Page-Figure u
Security Indicator
lights for
approximately 2
seconds If Indicator does not
light do Test E

THEFT DETERRENT SYSTEM: PASSKEY I i
A: LOCK CYLINDER AND HARNESS
TEST
1. Remove the hush panel under the steering
column. Disconnect the two-cavity connec-
tor in the wire leading into the steering col-
umn. Connect the male and female parts to
the mating connectors on the pigtails from
the 535628 Interrogator or equivalent.
2. Insert the customer's ignition key into the
Ignition Switch Lock Cylinder.
3. Press the On-Off switch on the 535628 Inter-
rogator to the ON position.
* The window above the Key Code Reader
indicates the electrical code for the key
(1 to
15) or
"En error.
Rotate the ignition lock cylinder while the
key is inserted to insure that the correct code
is read in all positions.
- If the code is correct in all positions, proceed
to step 5.
- If code is not correct in all positions, replace
the Lock Cylinder.
* If the window shows "E ", proceed to step 4.
4. Check the customer's ignition key by insert-
ing it in the Key Code Reader on the 535628
Interrogator.
If the Interrogator indicates
"EM, replace
the key with a spare or follow the procedures
under Key Replacement.
If Interrogator shows the electrical code
(1
to 15), replace the Lock Cylinder. (See pro-
cedure following Key Duplication Pro-
cedure). 5.
Set the Key Code Selector on the 535628
Interrogator to the same electrical code
determined in step 3. Turn the Ignition
Switch to START.
If engine starts, reconnect vehicle wiring
and check that the two-cavity connector at
the base of the steering column mates cor-
rectly.
If engine does not start, go to Test B,
Decoder Module Test.
B: PASS KEY DECODER MODULE TEST
(TABLE
1 )
At: PASSKEY DECODER MODULE
CONNECTOR (Disconnected)
Condition:
1 . 1mition switch: START I
Ignition Switch: RUN
Continued from previous c
1. Check the PNKIBLK (439) wire and ClN
Fuse for an open.
2. Check the ORN (440) wire and VATS Fuse
for an open.
3. Check the
BLKIWT (450) wire for an
open.
4. Check the PPL (963) wire for an open.
If
wire is good, replace ECM.
5. Check DK GRN (965) wire for an open. If
wire is good, do Test C.
For Diagnosis
See 1
See 2
See 3
See 4
Measure
Between
A1 (PNKI
BLK) &
Ground
(ORN' &
Ground
A1 (PNKI
BLK)
& I31
(BLKIWNT)
A2 (PPL) &
Bl (BLKI
WNT)
B: PASSKEY DECODER MODULE TEST
Correct
Voltage
Battery
Battery
Battery
5 Volts
(TABLE 2)
Measure: RESISTANCE
At: PASSKEY DECODER MODULE
CONNECTOR (Disconnected)
Conditions: Negative Battery Terminal
Disconnected
r No lCev ln lainition Switch
Measure
- Correct For Diagnosis
Between Resistance
& open circuit
UB2 (BRN) See 1
crank,
replace the PASSKEY Decoder
Module.
-
(Continued in next column) A3 (DK GRN)
& Ground
I . If voltages are correct, go to Table 2.
(Continued in next column)
Battery See 5

THEFT DETERRENT SYSTEM: PASSKEY
3. A number from 1 to 15 will appear in the
window designating the electrical code of
the key.
4. Cut a new key having the electrical code
ed from the 535628 Interrogator.
5. Start the engine using the new key to insure
that the key is correct both mechanically
and electrically.
Key Replacement (No Spare Key Available)
1. If the Ignition Key is lost and there is no
spare key, determine the mechanical code
from the code on the Ignition Key Lock
CyE
inder. The code may also be det
the dealer invoice for the car, or from the
Chewolet Zone Office.
2. Cut anew key to this mechanical code. Use a
blank PASSKEY test key which has no
resistance pellet. This key will be used to
operate the Ignition Switch for the remain-
ing steps.
3. Remove the hush panel under the steering
column and disconnect
C281 (two-cavity
connector leading into the steering column).
4. Insert the male half of the connector into the
female
pigtail connector from the 535628
Interrogator.
5. Set the Key Code Selector on the
Hnter-
rogator (535628 or equivalent) to "1 ".
6. Attempt to start engine using the key made
in step 2.
r If engine starts, the Key Code Selector is set
to the correct electrical code. Cut a new key
having this electrical code. The new key will
be customer's replacement key.
If engine does not start, turn Ignition
Switch to OFF, then turn the Key Code
Selector to the next higher position. Wait
four minutes and attempt to start the engine
using the new electrical code. Use the 4-min-
ute Timer on the 535628 Interrogator to
indicate the 4-minute interval. Start the
Timer by depressing the "Start" rocker
switch. The red indicator
will turn off at the
end of a four minute interval.
CIRCUIT OPERATION
Resistor senshg contacts are located in the
Ignition Key Lock Cylinder. These contact the
Key Resistor Pellet on the key when it is
inserted. When the lock is rotated, battery is
applied through the
CIH Fuse to the PASSKEY
Decoder Module. The Pellet resistance is then
colnpared against a fixed resistance in the Mod-
ule.
If the Key Pellet is the proper resistance, ter-
minal A3 is grounded, energizing the Starter
Enable Relay. At the
same time, a signal is
appfied at terminal A2 to enable the Electronic
Control Module
(ECM). When this signal is
received by the Electronic Control Module
(ECM), it allows fuel injector pulses to begin.
If the Key Resistor Pellet is the wrong
value,
the PASSKEY Decoder Module will shut down
tes. During this interval there
will be no output at terminals A3 or
A2.
If the Ignition Switch is turned on again dur-
ing this interval, the Timer will begin over
again and the PASSKEY Decoder Module
will
remain shut down for another 2 to 4 minutes.
The PASSKEY Decoder Module will continue
this process even if a key with the correct pellet
is used to turn the ignition back on. The Timer
is restarted by the ignition voltage at
t
A1 when Ignition Switch is turned to RUN.
Once the Timer has completed its
2 to 4 min-
ute cycle with the ignition off, the PASSKEY
Decoder Module and Timer are reset. A key
having the correct code can then be used to
start the engine.
The Security Indicator is controlled directly
by the PASSKEY Decoder Module. If there is a
PASSKEY Failure this indicator will be
grounded by the PASSKEY
Decoder Module
with the ignition in RUN,
BULB TEST or
START. When the Ignition Switch is first
placed in
RUN, BULB TEST or START the
Indicator lights for about 2 seconds as a bulb
check.

HARNESS CONNECTOR FACES
JUNCTION BLOCK, 6238
POWER DOOR LOCKS
POWER FEED FROM
IIP
HARNESS; CIRCUIT
40 AND 60
POWER REMOTE
MIRRORS
LUMBAR SUPPORT
CARGO
COMPARTMENT LIGHT CONNECTORS
WITHIN EACH
BRACKET CAN BE
INTERCHANGED
BLK POWER
FEED FROM
FUSE;
CIRCUIT
76
POWER WINDOWS

FOG LIGHT SWITCH,
SEE DEFOGGER CONTROL
WHY
FRONT POWER WINDOW
SWITCH (LH)
V00487 1
BLU
FRONT POWER
WINDOW SWITCH (RH)
V00571 0
FUEL PUMP RELAY, SEE A/C
COMPRESSOR CONTROL RELAY
BRN
FUEL PUMP SWITCH
(V8 VIM F) (V8 VIN 8)
V00?49 0
GEAR SELECTOR SWITCH
V00541 1
GENERATOR
V00176 0
C1 BLK CZ BLK
HATCH COWTACT ASSEMBLY
V00235.0
C1 BLK CP BLK
HEADLIGHT DOOR MODULE
V00512.0